Abstract:
This research aimed to study the performance of color removal from synthetic wastewater
by photocatalytic process with TiO[subscript2-]nanotubes. The characteristics of synthetic wastewater comprised of non-biodegradable.
The study compared the color removal efficiencies titanium dioxide nanotubes
photocatalyst that prepared by the anodizing process with four different electric potentials with and using two types of colors, i.e. IC and RB5.The physical characteristics of the prepared photocatalysts were investigated by XRF and FE-SEM that identified the elements of the catalysts and revealed nanotube characteristic of the surface.
The results indicate that the crystalline structure of TiO[subscript2+] For the photocatalytic activity test the color removal efficiency of IC and RB5 by this process with TiO[subscript2-] nanotubes photocatalyst under UVA light source of 1,580 μW/ cm[superscript2] revealed that the highest efficiency percentages were 76.19% and 65.59%, respectively for IC and RB5 with the initial concentrations of IC and RB5 of 0.8 μM and RB5 2.0 μM, respectively. The kinetics of the color removal from synthetic wastewater by photocatalytic process with TiO2-nanotubes photocatalyst under UVA light source were described by the 1st-order equation kinetics model. The specific rates of the color removal for IC and RB5 were 0.0176 min[superscript-1] and 0.013 min[superscript-1], respectively.